Urbanears Plattan ADV On-Ear Headphones, Dark Grey (4091045) 3D Hinge - Rotating metal parts for a custom fit Machine Washable Headband - Detachable fabric headband for easy wash and wear Interchangeable cable - Detachable cable that can be worn on either the right or left side Zound Plug - Allows for instant music sharing Collapsible structure - Folds down to the size of your fist for easy transport and storage. Connectivity Technology: Wired